Tesco is facing Britain's largest ever equal pay claim and a possible compensation bill of up to 4 billion pounds (C$7 billion), according to a law firm which has begun legal proceedings. It comes as a campaign for equal pay grows in the U.K.

Over the three-year term, members will receive an initial wage increase of 1.4 per cent — including retroactive pay for hours worked in April 2017 — plus an additional 1.4 per cent in years two and three of the contract, said the union.

Workers also achieved improved bereavement language that now includes siblings, stepparents and stepchildren. In addition, there are important language improvements regarding harassment and bullying, and the grievance procedure, according to UFCW.